The cumulative physiological effects of consecutive days of physical work in hot conditions

Not Applicable

• Conditions: Heat stress; Mental Health - Studies of normal psychology, cognitive function and behaviour; Neurological - Studies of the normal brain and nervous system; Cardiovascular - Normal development and function of the cardiovascular system; Musculoskeletal - Normal musculoskeletal and cartilage development and function

• Registration Number: ACTRN12623001069640
• Lead Sponsor: Deakin University

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2023-10-06
• Last Update Posted: 16 October 2023

Recruitment & Eligibility

• Status: ot yet recruiting
• Sex: All
• Target Recruitment: 32

Inclusion Criteria

Participants will be physically active males and females ages 18 – 40 years and BMI <35 kg/m2 as this is a representative sample of military personnel completing physically demanding workloads in the hot humid environments.

Prospective participants will complete a pre-assessment screening to confirm eligibility for inclusion. This will involve a DEXA scan and an aerobic and strength assessment to determine if they meet the minimum entry fitness standards for the Australian Army (i.e., equivalent to a multi-stage shuttle run result = 6.1; 2 min maximum push ups = 4 for females, 8 for males; 2 min maximum sit ups = 20).

These age range, BMI and physical fitness levels have been selected to ensure that participants are healthy and physically capable of completing the protocol.

Exclusion Criteria

Chronic disease
Pregnant or lactating
a current/habitual user of psychoactive drugs.
working night shifts/irregular working schedules.

Participants with diagnosed mental illness and muscle, bone, joint and tissue related injures will be excluded from the study if it impairs their ability to complete the protocol or may provide further harm to their diagnosed condition.

Participants will be screened using the ESSA’s Adult Pre-exercise Screening System (APSS) and be asked the following Have you been diagnosed with any mental health conditions that may impair your ability to complete the study’s protocol or which may negatively impact your health and well-being by participating in this study?”. Participants will be required to be fluent in English due to the verbal and written procedures a part of the research protocol.

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Body core temperature, as assessed using an ingestible pill thermometer (BodyCap, e-Celsius Performance, France).[ E nd of each 8-h simulated work day (immediately at the end of the final 2 h work block) on days one, two and three.]